Yes, the Afro-Louisiana History and Genealogy online search engine is a wonderful resource tool that has helped me with locating several of my enslaved colonial ancestors during both the French and Spanish colonial periods in Louisiana.

Dr Hall's book Africans in Colonial Louisiana is also another resource highly recommended for those interested in study of this particular subject matter and time period in Louisiana's history. Check out a few book reviews:

http://findarticles.com/p/articles/mi_m2005/is_n2_v28/ai_16351083/